ISO 21138-1:2020

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Plastics piping systems for non-pressure underground drainage and sewerage — Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) — Part 1: Material specification and performance criteria for pipes, fittings and systems

ISO 21138-1:2020-01 standard defines plastics piping systems for non-pressure underground drainage and sewerage, specifically structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE), focusing on material specifications and performance criteria for pipes, fittings, and systems.